// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_LOADER_LOADER_DELEGATE_H_
#define CONTENT_BROWSER_LOADER_LOADER_DELEGATE_H_

#include <inttypes.h>

#include <memory>

#include "content/common/content_export.h"
#include "content/public/browser/resource_request_details.h"
#include "content/public/browser/resource_request_info.h"
#include "net/base/load_states.h"

class GURL;

namespace content {

// Delegate from loader to the rest of content. Should be interacted with on the
// IO thread unless otherwise noted.
//
// This is used for breaking dependencies between content at-large and
// content/browser/loader which will eventually be moved to a separate
// networking service. All methods in this interface should be asynchronous,
// since eventually this will be a Mojo interface. See https://crbug.com/622050
// and https://crbug.com/598073.
class CONTENT_EXPORT LoaderDelegate {
public:
    virtual ~LoaderDelegate() { }

    // Notification that the load state for the given WebContents has changed.
    // NOTE: this method is called on the UI thread.
    virtual void LoadStateChanged(
        WebContents* web_contents,
        const GURL& url,
        const net::LoadStateWithParam& load_state,
        uint64_t upload_position,
        uint64_t upload_size)
        = 0;

    // Notification that a response has been received for a resource request.
    virtual void DidGetResourceResponseStart(
        const ResourceRequestInfo::WebContentsGetter& web_contents_getter,
        std::unique_ptr<ResourceRequestDetails> details)
        = 0;

    // Notification that a redirect was received while requesting a resource.
    virtual void DidGetRedirectForResourceRequest(
        const ResourceRequestInfo::WebContentsGetter& web_contents_getter,
        std::unique_ptr<ResourceRedirectDetails> details)
        = 0;
};

} // namespace content

#endif // CONTENT_BROWSER_LOADER_LOADER_DELEGATE_H_
